无法使用hibernate3-maven-plugin-3.0生成hbm2ddl

Question

我已经更新到更新版本的hibernate3-maven-plugin.尝试使用下面提到的插件时出现以下错误.

非常感谢解决这个问题的任何指示.

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>hibernate3-maven-plugin</artifactId>
    <version>3.0</version>

    <executions>
        <execution>
            <id>create sql schema</id>
            <phase>process-test-resources</phase>
            <goals>
                <goal>hbm2ddl</goal>
            </goals>
            <configuration>
                <componentProperties>
                    <persistenceunit>${app.module}</persistenceunit>
                    <drop>false</drop>
                    <create>true</create>
                    <outputfilename>${app.sql}-create.sql</outputfilename>
                    <skip>${db.schema.gen.skip}</skip>
                </componentProperties>
            </configuration>
        </execution>

        <execution>
            <id>drop sql schema</id>
            <phase>process-test-resources</phase>
            <goals>
                <goal>hbm2ddl</goal>
            </goals>
            <configuration>
                <componentProperties>
                    <persistenceunit>${app.module}</persistenceunit>
                    <drop>true</drop>
                    <create>false</create>
                    <outputfilename>${app.sql}-drop.sql</outputfilename>
                    <skip>${db.schema.gen.skip}</skip>
                </componentProperties>
            </configuration>
        </execution>
    </executions>
</plugin>

[ERROR] Failed to execute goal org.codehaus.mojo:hibernate3-maven-plugin:3.0:hbm2ddl (create sql schema) on project sample: There was an error creating the AntRun task. NullPointerException -> [Help 1]org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.codehaus.mojo:hibernate3-maven-plugin:3.0:hbm2ddl (create sql schema) on project framework: There was an error creating the AntRun task.

Answer 1

配置方式改为直接使用ant hibernate工具插件.所以配置与ant插件完全相同,不需要额外的taskDef,例如jpaconfiguration.有关详细信息,请参阅hibernate ant工具参考文档:http://docs.jboss.org/tools/3.3.0.Final/en/hibernatetools/html_single/index.html#d0e4651.

对于具有jpa配置的hbm2ddl,您可以使用以下内容:

<plugin>
    <!-- run "mvn hibernate3:hbm2ddl" to generate a schema -->
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>hibernate3-maven-plugin</artifactId>
    <version>3.0</version>

    <configuration>
        <hibernatetool>
            <jpaconfiguration persistenceunit="unitname" />

            <hbm2ddl export="false" create="true"
                update="true" format="true" outputfilename="schemaDiff.ddl" />

        </hibernatetool>
    </configuration>
</plugin>

失败时,会有"target/antrun/build-main.xml"文件配置hibernate工具.对于上面的示例,这看起来如下:

<?xml version="1.0" encoding="UTF-8" ?>
<project name="maven-antrun-" default="main"  >
<target name="main">
  <taskdef classname="org.hibernate.tool.ant.EnversHibernateToolTask" name="hibernatetool"/>
  <mkdir dir="/home/xxx/workspace/projectname/target/sql/hibernate3"/>
  <hibernatetool destdir="/home/xxx/workspace/projectname/target/sql/hibernate3">
    <jpaconfiguration persistenceunit="schemaDiff"/>
    <hbm2ddl update="true" export="false" outputfilename="schemaDiff.ddl" format=
"true" create="true"/>
  </hibernatetool>
</target>
</project>